Grate.



PATENTBD AUG.14, 1.906.

J. E. PARKISON.

GRATE.

APPLICATION FILED DEU. 29. 1905.

z SHEETS-SHEET 2;

NITED STATES Parleur OFFICE. i

JOHN ELMER PARKISON, OF DENVER, COLORADO.

GRATE.

.useful Improvements in Grates, of which the following is a specification.

- My invention relates'to grates, and has for its object to prevent the burning out of the latter and to facilitate their construction and operation, to which end I provide a series of grate-sections arranged in respect toI parallel Water-tubes so as to rockin relation thereto,

as `fully set forth hereinafter and as illustrated in the accompanying drawings, in Which j Figure 1 is a sectional elevation of a grate with my irnprovementgFig. 2, a plan view; Fig. 3, a front elevation; Fig. 4, a section on the line 4 4, Fig. 1; Fig. 5, a section through three of the grate-sections Fig. 6, a detached view of one of the sleeves.

The grate is provided with a series of arallel grate-sections A A, which may each e a continuous piece or may consist of a plurality of members each having side bars 8 terminating at their lower edges in shar ened ribs 18, so that when one section is roc ed in resplclt to another the sharp edge of the roc g section will engage the ashes or clinkers and shear them against the upper edge of the side bar 8 of the adjacent section.

To prevent the grate-sections from burning out, I support them in such close proximity to in the latter will absorb the heat to such an extent as to preserve the integrity of the said sections. These water-tubes 3 may be supported in any suitable manner and may communicate with water supply and' discharge pipes in any suitable way; but, as shown, they are connected so as to constitute a continuous conduit, and where the number of grate-sections is uneven the water-tube of the last section may communicate with the discharge at the rear end directly downward or through a return-pipe 13 as best shown in Fig. 1. While the grate-sec- -tions may be supported in any suitable manner so as to rock upon or in respect to the water-tubes, I prefer the construction shown in the drawings, where a sleeve 2 turns upon each water-tube and supports the grate-sections thereon. As shown, each sleeve may be cut away at the top ,to such an extent that the grate-section may rest upon the tube 3,

Specification of Letters Patent. Application filed December 29.1905. Serial No. 293.816. Y

parallel water-tubes 3 that the water Patented Aug. 14, 1906.Y

so as to be in as intimate contact with the latter as possible, `and the grate-sections are connected with the sleeves through the medium of U-shaped clips or connections-B, the arms of which extend upward through lugs 28 and are rovided with. nuts 29, the upper faces of t e lugs being so far below the upper faces of the grate-sections that the nuts will not be exposed above the latter and will be nearer to the water-tubes, so that they will be prevented from being burned out or from being worn by the dumping of coal upon the grate. As shown,each pair of water-tubes is connected at the front end by coupled fittings 30, and the second of these tubes is connected with the first of the next pair at the rear by a curved fitting 31.

It is possible to rock each grate-section independently' of the others, and I therefore provide lthe front end of each sleeve with a head D, secured to the sleeve by a set-screw 15 and having side and top recesses 5, adapted to receive the fork and lug of an operatinghandle 4, by swinging which the sleeve may be rocked.

In order to hold each grate-section horizontal when not rocking the same, I provide above each head D a detent 6, supported by -a cross-pivot 14, so as to swing into position to prevent any rocking of the head until the handle 4 is put in place, when its lug will push back the detent to the position shown in dotted lines, Fig. 1, thus unlocking the sleeve.

The hollow'cross-bar 7 at the front of the grate is a chambered bar with recessed hubs 9 for the passage of the sleeves 2, as shown, and a securing-piece 40, recessed to receive the pipe 3,

to bear against the end of the head of the sleeve 2 and hold it in position. This piece bears against the lower flange of the hollow cross-bar 7 and holds the pipe 3 up so as to be close against the under side of the sleeve 2, where the latter is continuous, bringing the water-cooled pipe 3 as close as possible to the grate-sections. The pipes at the rear enter recesses in the flange 44 of the rear cross-bar 45 and are secured in place by a detachable plate 46, bolted to the cross-bar.

Without limiting myself to the construction shown, I claim- 1. The combination in a grate, of a series of grate-sections, a series of water-tubes supporting said sections to rock in respect to the water-tubes,

and means for `supplying the.

is provided with a set-screw 41, by means of which it is secured to the pipe so as' IOO IIO

latter with'water, substantially as set forth. 2. The combination in a' grate, of a series of grate-sections, a series of water-tubes connected to form a continuous conduit su porting said Sections to rock in respect to tlxie Water-tubes, and means for supplying the latter with water, substantially as set forth. 3,'The combination in a grate, of a series of grate-sections, aseries of water-tubes su porting said sections to rock in respect to t e water-tubes, means for supplying the latter with water, and means for rocking each Aesection on its tube, substantially as set orth.

4. The combination in a grate, of a series of grate-sections, a series of water-tubes sulpporting said sections to rock in respect to t e water-tubes, means for sup lying the latter with water, means for roc each gratesection on its tube, andiv means forvlocking each section in its normal position, substantially as set forth.

5. The combination in angrate, of a series of water-tubes, and a grate-section supported to rock on each water-tube and provided with side bars with lower sharpened ribs, substantially as set forth. v

6. "ihe combination in a grate, of -a series of Water-tubes, a grate-section supported tov rock on each water-tube and consisting of a plurality of members, and means for connecting said members and for rocking the same together, substantially as set forth.

7 The combination in a grate, of a series of arallel water-tubes, a sleeve turning on eac tube, and a grate-section connected with said sleeve to rock therewith, substantially as set forth.

8. The combination in a ate, of .a series p of arallel water-tubes, a s eeve turning on eac tube, and a grate-section consisting of a plurality of members connected with said sleeve to rock therewith, substantially as set forth. 4

9. The combination in a grate, of a series of plarallel 'water-tubes, a sleeve turning on ea tube, and a grate-section connected with said sleeve to rock therewith, the sleeves being cut away' at the top to permit the grate-sections to rest on the tubes, substantially as set forth.

10. The combination with the water-tubes, of sleeves each cut away at the top for part of its length, a grate-section to each sleeve and U-shapedV connections engaging the s eeve with ends extending upward through the grate-section and provided with threads and nuts thereon, substantially as set forth.

' 11. The combination with the water-tubes, of sleeves each cut away at the top for part of its length, a grate-section to each sleeve having lu s below its uplper surface, and a U- shape connection, .t e arms of which are threaded and extend upward through the lugs and carry nuts below the surface of the section, substantiallyas set forth.

12. n.The combination in a grate,lof the front and back cross-bars, sleeves rocking in openin of the front cross-bar, Water-tubes extending through-the sleeves and rthrough' the openin of the back cross-bar and connected wit each other, and grate-sectionsconnected with the sleeves to rock therewith, substantially as set forth. i

18. The combination in a grate, of the front and back cross-bars, sleeves rocking in ope of the front cross-bar, water-tubes extending through the' sleeves and through the openin of the back cross-bar and connected witseach other, grate-.sections connected with the sleeves to rock therewith, and heads on the sleeve shaped to permit the engagement therewith of an operating-lever, substantally as set forth.

14. The combination ina grate, of the front and back cross-bars, sleevesrockingin openin s of the front cross-bar, watertubes extend through the sleeves and through the opem of the back cross-bar and connected wit each other, grate-sections connected with the sleeves to rock therewith, heads on the sleeve sha ed to permit the engagement therewith o an operating-lever, anddetents ivoted to swing over and engage the hea s when the lever is not inposition, substantially as set forth.

'15. The combination with the water-tubes, sleeves turning thereon, and ate-sections connected with .the sleeves, of a ack bar having an upright Hange with notches to receive the tubes, and a detachable retaining-strip extending across said notches, substantially asset forth.

16. The combination with the front bar havin bearings the hollow sleeves mounted in sai bearings and ate-sections connected with said sleeves, orwater-pipes extending through the sleeves and of less diameter than the openings of the latter, and means for maintaining the said wateripes in an elevated position within the slleves, substantially as set forth.

In testimony whereof I aiix my signature in presence of two witnesses.

JOHN ELMER 'PARKISON IOO IIO 

